Boat.



J. H. MAY.

\ BOAT.

APPLIGATION FILED MAY z2, 190s.

Patented. "me, 15,1908.

@Hoz-110,43

- UNITED PATENT JOSEPH n. MAY, oF ORIENT', S'OTHDAKoiA-,'Ass1eNon or oNefTHIRD THENRYHOFMAN, I

To all-whom it may concern:

- Beit known that LIJOSEPH H. MAY', a citizen of the United States, residing'at- Orient, inthe county of Faull; and State of South Dakota, have invented new and usefullmproveniente in Boats, of which the following` 'is a specification.,

The invention relatesto 'an improyenicnt4 particularly directed to' a v boats, bein propelling mec anism as an essential part of 'which there is included 'ameans for increas' ing the buoyancy of the boat structure.v`

he main 'ob]ect of. the present invention is the .provision of a propelling mechanism lfor boats in the construction of which there is provided an' endless paddle carrier `arv accordance with' my invention. .f Ijig. :2 is af `plan` of the same', the rear portion of the main deck being broken away. Fig, 3 is a perspective of one of the paddles.

Referring particularly to the drawings, my improvement is designed for use `with a boat structure including a hull 1, of any usual or preferred form, havin 'a main deck 2, which,-

in the present'instan e, is extended beyond the storage portion of the hdll to provide an overhang 3, the main deck being arranged 'to'support a cabin or other suitable inany desired or preferred manner;

Longitudinally mounted upon ai'shaft 5 secured beneath the overhang 8 and inthe side-framing timbers of the hull is a drum n 6, which, for the'purposes .ofthe present invention, is a hollow airtight structure of 4,5 substantial diameter. The drum 6 is of such diameter and the shaft 5 is so vlocated with relation to the normal water line of. the hull that the lower portion of the drum will be at all 'times belowl said water line. Mounted in rear of and above the drum 6 is a roller 7, the shaft 8 of which extends beyond the side timbers of the hull and is provided on each end with a sprocket wheel 9.

The respective end portions of the peripheral surface of the cylinderI4 6 are formed f spedneg'tipiivfteter Patent. Application mea Hayez, 190s! seriifnofiataas.

structure fPitentedDec. '155, y19.08.-

wth sprocket'teetli), the"roller7v 'beingsimi larly formed lwith 'sprocketfteeth l0. The alinedsprocket teeth -on ythe cylinder and .rollerl engage and .'drive an .endless ysprocket chain l1, therebyproviding two'parallfel-endless sprocket chains' engaging thefends of the roller and drum: yThe pair vofvsprocket chains thus provi ded are 'connected by -paddles 12 shown more,y particularly' in Fig.. 3, these paddles bridging the space4 between the chains and being` `,ap1)' `rc')Xiina'tely`f` equal in length to4 the/(length Lof `the Idri-1m f .The paddles are each -constructed'of a single `metallic section bent into right angularjform afndfhaving end members 13 .toy project inwardly beyond the surface of `the -niembers andthereby for-min eilecta '.pocket'. weithinl the members. lheseffniembers arefsequredl transverse y'the' chains-by :fastening ionejplate ofthe ,inemberfto the chains so that ft'hevother' plate will pri'iject yat approximately/1.a ,fright angle from the SeCUredplate..

wenn@ h 11,propagar@beton-tn'is `mountedin bearings 14a `shaft lgftheends ofwhich'rproject beyond the sidsfof th'ehull and'Y are each 'provided ithl a drumlfg said drums being each prende 'wiu end'spptket Ivteeth 17, as describedinf connection With,.the `drums 6. Inrear of'theshaft'l and-within the hull-.is` mounted a roller shaft'lS,the

` ends ofwhich .project beyond"thev sides f the .lhul'l-and areiprovided with rollers 19 having end sprocket .teethv 20-,as described ,in

.connection with. the roller 7,- The sprocket -teeth 17 of each drum and the alined sprocket teeth 2O 'of each roller are connected by sprocket teeth 21, each pair ot said chainsV beingc'onnected by paddles 22, as previously described in connection with'thechains 11.

From the above description it will be understood that the rearportion of the boat is rovided with a centrally arranged propel ing mechanism including a drum and la roller over which pass endless carriers connected by transversely arrangedv paddles,l while-each side of 4the boat in advance of the rear propelling mechanismfis similarly provided with a propelling mechanism identical in all respects with the rear propelling mechanism except that the 'parts are reduce in longitudinal dimensions. It,isof course, understood that the drums 16 ofthe forward propelling mechanisms are of a hollow airtight type described in connection with the drums 6,and that said drums 1,6 are so disposed beyondlthe normal water line a distance similar to the extension ofthe drum 6. i (A partition 23 is mounted within the hull to support an engine 24, which is directly".

geared to the roller shaft 18 of the forward propelling mechanisms, said shaft 18 immediately beyond each side ofthe hull being provided with sprocket wheels 25 connected by sprocket Vchains 26' with the sprocket' wheels 9 of the rear roller 'shaft 8. By this construction the propelling mechanisms are simultaneously and uniformly driven through operation of the respective roller shafts.

If desired thei main deck 2niay be prol' vided with lateral extensions 2,7 to overlie the side propelling mechanisms, and for convenience I provide the forward or bow end of the hull with a manually controlled rudder 28, tliough'the direction of travel of the boat may be otherwise controlled if desired. In use the proper' operation of the chains 11 and 2l will force the paddles 12 longitudinally through the water and cause the boat to travel in a `forward direction, ity being noted in this connection. that the roller` shafts of the respective propelling mechanisms are so arranged .with relation to the drum shafts that the rollers, which are of materially less diameter than lthe drumshave their upper planes in horizontal alinementl withthe upper planes of the drums.'

,By this means ,the chains in leaving the water 'after drawing the paddles therethrough for propelling the boat will travel at a rearward and upward incline thereby effectively discharging all the water froml the paddles prior to the travel of the paddles over the driving rollers. Furthermore, the angular'formation o f the paddles tends to prevent the travel of water oveirisad paddles during the driving function of the paddles, thereby increasing the efz'ectivenesfly of said parts in operation.

' In addition'to the driving function the hollow airtight drums 6 and 16 tend to materially increase' the normal buoyancy of the meclianisin arranged at the rear thereof,

and duplicate side propelling mechanisms -arranged in advance of the rear propelling mechanism, each of said propelling mechanisms comprising Va hollow airtight drinn adaptedto projectbelow the water line of the boat, rollers supported in rear of the drums, endless chains passing over the/Y.'

drums and rollers, and paddles securedl to said chains.

2. A boat having a central propelling mechanism arranged at the rear thereof,

du licate side ro ellinof mechanisms ai'- ranged in advance of the rear propelling mechanism, each of said propelling mechan- 'isms comprising a hollow an` 4ght druin adapted to project below the water line of the boat, rollers supported -in rear of the drums, endless' chains passing over the drums and rollers, and paddles secured to said chains, said paddles including a rig'lzfj angular member. 4

In testimony whereof I aiiix my signature,

in presencepof two witnesses. y

. d JosEPH ii. Mar.

Witnesses: Y

FRANK'A. Romains, WM.l MGKAY. 

